The truth of the matter is, it depends on your budget, your process, your formula, and so much more. I’ve scaled two different soap companies to production soapmaking methods personally, as well as working with hundreds of soapmakers to do the same.

Each part of the soapmaking process requires special consideration and has various possibilities. While every situation is different, there are quite a few recommendations and reviews I can provide to help you make the jump to production soapmaking in your own studio. Let’s go through each part of the process and talk it out!

How to Mix Big Batches of Soap

When it comes to scaling up your soapmaking production, you’ll find yourself needing a new way to mix up your soap. Long ago, simply using a stick blender was an amazing addition to the process of soapmaking. A stick blender was magic compared to mixing with a whisk or spoon.

As you move your soapmaking batches up to twenty or forty pounds of soap at a time, you’ll find a regular stick blender may not work anymore! The depth or volume of the soap may be too much for your stick blender to handle.

Luckily, there are quite a few options that you can tailor to your soapmaking process. You’ll want to consider the depth of your soaping container and the soap within it, as well as the amount of mixing needed to bring your soap to trace.

If you’re on a budget:

Using a handheld power drill with a paint mixing attachment is an affordable way to mix big batches of soap. A drill and mixer attachment can cost you as little as $40 to get started.

Then you’ll need to choose a paint mixing attachment for your drill. My personal favorite is the stainless steel Jiffy Mixer that comes in a variety of sizes. Be aware though, if you get the Jiffy Mixer, you need a 1/2 inch chuck drill rather than the standard 3/8 inch.

You can find a variety of paint mixing attachments at a local hardware store for as little as $5 to $20. Be careful when purchasing them! If you choose to pick one up locally, keep these tips in mind:

Avoid squirrel cage mixers as they often introduce a lot of air into the soap.

Ensure the attachment is not made of aluminum (or it will react with the soap).

Skip any painted or epoxy coated attachments as they will flake, scratch, and wear down over time.

Another option is the Willow Way Pot Whipper from Soap Equipment, which I have also used in the past. I personally prefer my Jiffy Mixer over the Pot Whipper. However, the Pot Whipper does work well and the team at Soap Equipment know their stuff.

If you’re ready to upgrade:

Many soapmakers choose to upgrade to a commercial stick blender rather than the drill and paint mixer combination. Commercial stick blenders typically cost anywhere from $200 to $600. But, they are designed to be used in commercial kitchens blending huge stock pots of ingredients. The Waring Big Stix stick blender comes with various shaft lengths that are removable and dishwasher safe, allowing you to choose one that works for your soapmaking.

The next big step up is a large commercial floor mixer. These pieces of equipment are thousands of dollars but can be reliable and helpful in steady production soapmaking.

Using Production Soapmaking Containers

When you increase your soap batch size, you’ll outgrow your current soapmaking containers. Many soapmakers believe they must use stainless steel pots only and that can be a major stumbling block. The good news is that while stainless steel is an option, it’s not required!

Reusing containers you already have on hand can get you started with big batches for less. If you currently purchase your solid oils, like coconut oil, in bulk, they likely come in five-gallon to seven-gallon buckets. These buckets are the perfect size for soap batches up to forty pounds in weight! Simply clean them out and put them to work!

You can also try asking local restaurants, bakeries, breweries, and the like. Many of their ingredients also come in these giant buckets, and they tend to toss them out or recycle them. You could offer to take them off their hands for a couple dollars!

If you don’t have any buckets to re-use, you can buy new buckets for relatively cheap. I personally prefer seven-gallon buckets as they give more room for mixing and sloshing of the raw soap when pouring, but they can be difficult to find locally. Five-gallon buckets, though, are always plentiful in the paint aisles of home improvement stores!

Don’t forget that you can also masterbatch your oils or lye solution and use well manufactured HDPE plastic buckets and carboys for storage! My personal favorite supplier for buckets, carboys, and the like is US Plastic. If you outgrow seven-gallon buckets, you can always move up to plastic drums, too!

If you need to be able to melt the contents of a bucket or drum, a wrap-around silicone heater works well. You want to make sure that you use a temperature adjustable model. And that it is designed for use with the material of your container. To help distribute the heat evenly, layer a piece of aluminum flashing between the heater and the bucket or drum.

If you’re ready to upgrade:

Moving up from DIY solutions can be a big increase in efficiency and reliability, so if you’re ready to make the jump, water jacketed heating tanks and lye tanks are the way to go. Soap Equipment carries a variety of sizes, along with some great accessories like timers, mixers, stands, and scales.

Don’t forget that soapmaking is similar to other production crafts, like brewing beer and honey production! I’ve seen some brewery and beekeeping supply companies that carry similar tanks as well.

Soap Equipment’s Pot Tipper is also a good move for soapmakers who can’t lift large batches of soap but want to be able to keep scaling up.

Want to See This in Action?

If you’re nervous about how production soapmaking works in reality, join us in the Resource Library to watch me make 40 lbs of soap with these suggestions and snag tons of other bite-sized biz-boosters in the process!

Filling Commercial Soap Molds

When it comes to increasing your soap batch size, you’ll also need to increase your mold size or quantity. This tends to be the biggest stumbling block for soapmakers nowadays! Most soapmakers rely on using silicone for small batches and don’t want to give that up!

In my opinion, silicone for large batches isn’t as durable as it is in smaller batches. Silicone liners tend to stretch out as they are exposed to the heat from saponification and the stretching from unmolding. With a large block of soap, this means more heat and more stretching. In production soapmaking, that also happens far more frequently. Over time, silicone molds may tear at the corners, grow larger than their original size, and/or become floppy.

Personally, I love my silicone molds as much as the next soapmaker for small batches. For the most part, I stick to wood and HDPE in production soapmaking. While lining a mold is a pain in a smaller batch size, big batches make lining easy peasy.

You can find silicone production soapmaking molds on occasion. I’ve recently discovered Workshop Heritage production molds. After a test run, my new 25 -pound production mold gets a thumbs up (although the flopiness of the liner concerns me a bit). You can see the Workshop Heritage soap mold in action on our YouTube channel.

Many of the producers of my favorites, such as Woodfields and Silvermoon Molds, are no longer in business. However, if you do happen to come across a soapmaker selling their molds on a destash site, snatch them up. (I have a couple of them, and while the silicone has stretched a tiny bit, they are still very useful!)

Suppliers like Nurture Soap Supply and Bramble Berry make a number of silicone options that are not as large as the now-defunct versions. If you don’t mind pouring multiple molds, you can use those for production.

I’ve also known a few soapmakers that have contracted custom silicone molds directly from manufacturers overseas. If you are willing to do the research, it’s an option.

Another great option for production soapmaking is HDPE molds. You can get custom HDPE molds from Rich at Soap Hutch, and they work great. (I’ve owned multiple molds from Soap Hutch, and use them to this day.) If you want to stick to a slab option so you can texture the top of your soaps, Soap Hutch is your go-to.

However, if you are good to go with a block mold, where you have straight flat sides on each bar of soap, Soap Equipment Pro Molds are the next best option.

Be aware that you may need to line your HDPE molds depending on your recipe. (My standard recipe for my first soap company, for instance, did not need a liner, but other recipes I’ve used have!) An easy trick is to use parchment or wax paper cut to the size of each mold side, using a thin layer of castor oil to adhere it in place.

You also want to avoid trying to cold process oven process in HDPE molds. Chances are that your big batches of soap will be large enough to generate enough heat to gel on their own, but just be aware that high heat can slightly warp HDPE long term.

Using Big Batch Soap Cutters

Now that you’ll be making big batches of soap, you’ll need a way to efficiently cut that soap into loaves and bars! Once upon a time, there were very little options for cutters on the market. Nowadays there are a ton to choose from.

Like other aspects of the scaling up process, you need to consider your unique soapmaking process. You may choose to pour soap into multiple loaf molds, so you won’t need a loaf splitter. Or you may choose to make soap in a block mold, so you need a cutter designed to handle that.

If you’re on a budget:

Surprise, surprise, you can DIY your own cutters! I’ve personally built loaf splitters out of wood, a guitar string, and a couple pieces of hardware.

However, the available options of soap cutters made out of wood are both economical and well worth the cost. You can find loaf splitters and multi-wire bar cutters made out of wood from Bud Haffner or Plowboyz on Etsy as well as Bramble Berry.

Another oldie but goodie that many new soapmakers don’t know about is Cumberland Acoustic. My first multi-bar cutter was built by them, and I highly recommend them. In fact, when I broke all my replacement wires on that cutter months after buying it, I panicked and sent them an email. (Don’t cut fully cured soap on a multi-wire cutter, by the way.) They immediately put more replacement wires in the mail without charging me. And they told me where I could find them locally for the future.

If you’re ready to upgrade:

Moving away from wood and towards a steel option when it comes to soap cutters is the way to go.

Personally, I have cherished my cutters from For Craft’s Sake for years now. Their multi-wire bar cutter, known as The Tank, can be custom built to your specifications. The Quick Cut Log Splitter makes cutting slabs down into loaves easy with a sliding HDPE try and stationary wires. (It’s also completely customizable to your needs!)

Last but not least, don’t forget automatic cutters that do all the hard work for you! Soap Equipment’s Air Cutter works magic (I swear.) You’ll need an air compressor to operate the pneumatically powered cutter. If you can swing the upgrade, it’s well worth it for efficient production without the heavy lifting.

Scaling Up Soap Curing

When you start making bigger batches of soap, you need a way to cure all that soap in as little space as possible. There are quite a few options here, and the sky is the limit!

Bakery Racks (left), Industrial Shelving (right)

If you’re on a budget:

Soap Equipment’s drying trays are an economical way to cure soap. They stack on top of each other, and an additional dolly can be purchased to move them around easily. It can be a pain to stack and unstack the trays, as well as move them around as they get quite heavy.

Don’t forget to check out restaurant liquidation sales and equipment auctions, where you might be able to snag a deal. (I’ve bought stainless steel tables, sheet pan racks, and the like for $50 or less that way!) If you want to snag new equipment, Webstaurant is my go-to supplier online.

Hey-ho, I'm the soapy founder of Modern Soapmaking, and I eat, breathe, and sleep soap. (Okay, I don't eat soap... that's gross.) My passion is in helping other soapmakers find their path, whether it's in the craft or as an entrepreneur. Maybe, I can help you find yours?

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Reader Interactions

What Folks Are Saying

I love how this blog post details out all the options, aspiring to advanced production soap making. While I have begun to build molds to scale my production up, and I have been masterbatching oils and lye according to your ebook for a couple years now, I’ve saved this article to my desktop to come back to often. After taking most of your other business classes online, I really see now that this needs to become a customized, written, and detailed plan from just starting out production soaping to scaling up further as time and profit grow, and definitely taking physical limitations taken into consideration all along the way. Thank you for really making this information so visual and accessible!

Thank you, Lisa! This was a topic that I’ve been wanting to write about for a long time. It’s not as simple as saying, “buy X, Y, and Z” because every soapmaker is unique in their process, budget, and restrictions! I hope this is a valuable resource for folks to choose their own path!

I have 6 of those commercial sheet pan racks, and I bought the full sheet aluminum trays, which I covered in dollar store sticky shelf paper. 3 years on, they are still in impeccable shape. They even wipe down well with a sponge. Of course, I don’t get air flow through the bottom, but the cost of this setup (I used Webstaurant.com) is about 25% of the cost of those ventilated plastic stacking racks, and a lot easier to pull out whatever tray you want without have to unstack and restack. I’m really happy with them.

This was a well timed and informative article. I am so happy you took the time to “download” all of this info out of your head!! I am mid-way into this process, as we are still relatively small, but although I am terrified of using the tipping pot to fill molds, I know that should that day come, I can know what to get, and watch a video or two on how to do it and feel more prepared. Thanks!!

Hi There! I’ve went through almost all of these options when I moved to large batch soap making. I would like to comment about using paint stirrer attachments, though. They are mostly only stainless steel coated, and only last for a few batches before the lye eats through the coating to the base metal below. I do not recommend these at all. Apart from that, every other suggestion you state is right on the money! Great article.

Louise, the attachment we link to in the article is stainless steel and has served Kenna well through MANY batches. But, yes, it is very important to keep in mind that not all stirrers are created equally.

I made sure to point out in the article to avoid coated or painted ones, for this reason. I’ve seen it happen with a couple of times. The Jiffy Mixer I recommended is definitely stainless steel through and through (it’s why it’s more expensive than others – mine was $60 when I purchased it.) I’ve used it thousands of times and it’s still going strong! 🙂 Thanks for sharing your experiences, Louise!

First of all allow me to say that I am thankful for you and the very informative information that you share. This may be a crazy question, but I need to ask because I want to learn. How to create recipes for soaps. There are different size molds and I am curious how to create for specific mold sizes. Please Please help me!!

My best selling soap has cinnamon in it and therefore, it accelerates like crazy. I’ve been doing it hp, but only in my crock pot. This is a beer soap and I will be growing the business, I’ve already had several requests to wholesale. Is there any way to scale this up doing it cp? Mixing the scent in the mold, using a slab mold? Any other suggestions?

Margie, Check out this article on controlling trace in CP soap. Both your fragrance and beer will accelerate trace, but you can modify your base oils, mixing technique, temps, and lye solution strength to counteract that acceleration.

I would NOT suggest adding the fragrance after pouring into the mold. The chances of poor and uneven incorporation are just too high. Rather, add your fragrance to your oils before adding your lye solution. The oils will provide a buffer between the lye and fragrance, tempering the acceleration.

I’m new to all of this and wanted to thank you for all the wonderful resources you provide. It started as helping someone who was going through breast growth and their breasts were always dry and uncomfortable. I mixed up some things in a pan, poured it in a jar and that was the start. Thank you for helping me progress.

Just made a batch of beer soap and left it in the mould for 22 hours . I used a very thin and sharp drywall scraper to cut the loaf (2.5 inches deep x 3.5 inches wide x30 inches long ) but the soap would break before the scraper was two thirds of the way through the loaf.Can the soap be cut while it is still warm and soft?

Hey, Karen,
Without knowing the specifics of your recipe and techniques, it’s hard to say if your soap crumbled because it was cut too late or another issue, like uneven mixing.

You can certainly try to cut it earlier next time, but if it is too warm and soft (especially still in gel stage) it can be very hard to handle without marring the bars. You might also have better luck with a thin wire cutter or a recipe with more soft oils.

What concerned me is the link to the site selling Willow Way Pot Whipper discouraged use of paypal, said they don’t accept international credit cards, and when I typed in my country location to get a shipping quote, it came up with an amount of approximately $2400.00. Very wary of that site now. If a person wasn’t paying too much attention to detail, they’d be up for a huge loss of $$$ and no way to have paypal help them.

Hey, Bridgette,
Soap Equipment is a reputable company that we have dealt with for years. If you are interested in purchasing the pot whipper but have concerns about the shipping cost, I’d urge you to call or email them about the quote.

Or, take a look at some of the other options we mentioned in the post.

And, of course, paying attention to detail is important in all aspects of soap business…from mixing lye to whipping out that business credit card!

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[…] When you are looking to scale up your business, there’s a lot of considerations to keep in mind. Luckily, I’ve been there and done that, and wrote all about it in our guide to production soapmaking. […]

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